When you run the battery flat the chip inside the battery goes into a coma. It takes several hours for it to wake up and when it does the phone will boot and regular charging will resume from about 3% battery. It will not run or charge until the chip in the battery wakes up.

The more you interrupt this process the greater the chance you will damage your battery.

When you run the battery flat the chip inside the battery goes into a coma. It takes several hours for it to wake up and when it does the phone will boot and regular charging will resume from about 3% battery. It will not run or charge until the chip in the battery wakes up.

The more you interrupt this process the greater the chance you will damage your battery.